I am a new customer. We have an iphone 4 on IO6. I have updated the APN using the unlockit.co.nz site. I have updated the MMS settings to use the att.mvno using ibackupbot as described on various places.

I cannot get Group MMS or picture MMS messages to send. They say "not delivered" and "message send failure".

I'm having the same issue with an iPhone 4S. Data works fine, but mms messages over cellular network do not work. I got my apn from unlockit.co.nz as well, but I did not edit any other settings. I'm running ios6.

Hi Jeagen. My name is Straight Talk Lindsay. We are sorry for the trouble. Let me help you. We need to take this issue offline, so I can address it further. I will contact you directly with a private message. Thank you.

The only method that works with ios 6 is the sim swap method. You can get a T-mobile sim on ebay for a few bucks.. def worth it. However, your phone must be factory unlocked. If you need help with this pm me.